In accordance with the requirements of citation databases, proper citation of publications appearing in our Quarterly should include the full name of the journal in Polish and English without Polish diacritical marks, i.e. "Eksploatacja i Niezawodnosc – Maintenance and Reliability".

The usefulness of the system of quality assurance in management of companies

In the modem world, quality becomes the base of competitiveness, therefore it takes a significant place in the strategy of the company's management. Quality expenses are characterised by high effectiveness. A verified in practice tool of management is the quality assurance system. This paper reveals the essence of the quality assurance systems and quality management. It also presents the usefulness of the quality assurance system in the process of increasing effectiveness and efficiency of an organisation activity.

CFD modeling of vane pump vanes operation

The paper covers the problem of the flow between the blade and stator in order to achieve advantageous -work condition, which is the presence of fluid friction and leak tightness of the system. The suitable contact force of the vane against stator, together with properly determined system geometry, has a significant influence on achieving high efficiency and life of the pump. In order to achieve this purpose it is necessary to determine the master value of the contact force that the system must generate. CAD and CFD modeling methods have been used to reach the objective. The results of model analysis will be presented in the full paper.

Problems of power parameters measurement of constantspeed engines with small cylinder volume by acceleration method

The purposeful processing of long-term documented maintenance data can provide plenty of information not only about a machine's history, but also about its maintenance system. The main objective of data analysis is to continually improve the maintenance efficiency, which is closely related to improvements in dependability and overall productivity of the production equipment. This paper pinpoints the main problems of most widespread indicators of maintenance efficiency - OEE and other proposed alternative methods for maintenance efficiency assessment, with the aim of locating the weakest areas of the maintenance system.

Modeling the reliability and efficiency of flexible synchronous production line

The paper introduces a mathematical model of operation of a flexible synchronous production line (FSPL) of multifunctional CNC machines that includes one redundant multifunctional CNC machine which can take over the functions of every FSPL machine. The graph of FSPL state, relations and equations used to calculate reliability and productivity are shown. Maple, the software used for reliability and productivity calculations and modelling, as well as the mathematical results are presented.